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- On the ribbon, click Design tab
 Power Transmission panel Press Fit Calculator .
- On the Calculation tab, set the desired values, criteria, and materials.
- Click Calculate.
- Click OK to insert press fit calculation to the Autodesk Inventor Assembly.
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Calculation in Metric Units
This procedure creates an example using the sample specifications.
Sample Data:
- Clamping Factor (pressing) ν
1
= 0.055
- Hub Material = Steel
- Shaft Material = Steel
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- On the ribbon, click Design tab Power Transmission panel Press Fit Calculator .
- On the Calculation tab:
- In the Required Load box, select Required Torque and enter Torque = 500 and Safety Factor = 1.
- In the Dimensions box, enter Outer Diameter = 100 and Connection Length = 78.
- In the Advanced box, check the Surface Smoothness box and enter Clamping Factor = 0.09 and Clamping Factor (pressing) = 0.055.
- In the Temperature box, select Limitation of Shaft Cooling.
- In the Hub Material box, check the box to open Material Database. Select Steel and click OK.
- In the Shaft Material box, check the box to open Material Database. Select Steel and click OK.
- Click Calculate. The optimum H8/u8 fit is designed and the ambient temperature is calculated as 20° C, on the condition is that the shaft is not cooled.
- Click OK to insert press fit calculation to the Autodesk Inventor Assembly.
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Calculation in English Units
This procedure creates an example using the sample specifications.
Sample Data:
- Torque M
p
= 370 lbforce ft
- Safety Factor k = 1
- Outer Diameter D
2
= 4 in
- Shaft Diameter D
1
= 3 in
- Connection Length L = 3 in
- Clamping Factor ν = 0.9
- Clamping Factor (pressing) ν
1
= 0.055
- Hub Material = Steel
- Shaft Material = Steel
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- On the ribbon, click Design tab Power Transmission panel Press Fit Calculator .
- On the Calculation tab:
- In the Required Load box, select Required Torque and enter Torque = 370 and Safety Factor = 1.
- In the Dimensions box, enter Outer Diameter = 4 and Connection Length = 3.
- In the Advanced box, check the Surface Smoothness box and enter Clamping Factor = 0.09 and Clamping Factor (pressing) = 0.055.
- In the Temperature box, select Limitation of Shaft Cooling.
- In the Hub Material box, check the box to open Material Database. Select Steel and click OK.
- In the Shaft Material box, check the box to open Material Database. Select Steel and click OK.
- Click Calculate. The optimum H8/u8 fit is designed and the ambient temperature is calculated as 68° F, on the condition is that the shaft is not cooled.
- Click OK to insert press fit calculation to the Autodesk Inventor Assembly.
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